The concensus seems to be that the new diesel fuel is lower in lubricity. Many have suggested additives such as ATF or 2 stroke oil. My thinking is that there may be additives that do not get along with the seals in older diesels. I have settled on adding 30W non detergent oil at the rate of one quart to ten gallons of fuel. I try to keep this up in my old Cats. My 89 Jetta diesel has responded favorably to this treatment.
Non Detergent oil is kind of hard to find nowadays. I get it at Autozone for about $2.25 a quart.
Tom
I get non-detergent oil at our local TSC. I gave about $4.00 for a 2 gallon can.
Dave
I add Power Service Diesel Fuel additive to my machines---use home heating oil in my D2,941B, and D3B but diesel fuel in the smaller 3 cyl engines
from a heating engineer go carefull using kero some times can be very dodgey
some of the loads we deal with play hovac with heating appliances 😕
A few years ago I acquired several hundred gallons of heating oil for free. I mentioned this to the fuel supplier I deal with and he said to keep a close eye on the heat gauge as it burns a bit hotter than diesel. The main difference I noted was that the D4 as well as the Ford 555A backhoe both started a lot easier in colder winter weather. It was my winter fuel from then on, but for summers I'd switch back to off road diesel. For both, I add a quart of two stroke oil per 10 gallons of fuel.
Okay....now I am a bit confused. Is it better to add 30w non-detergent oil, two stroke oil or just off road diesel straight from the tank for the older Cats ????